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Cat 277c Hydraulic Accumulator Precharge Pressure

Cmark

Senior Member
Joined
Jan 2, 2009
Messages
3,178
Location
Australia
Accumulator charge pressure is dependent on the application. That particular accumulator is used in multiple different machines and each will specify a different pressure.
I say 130 psi.
 

Quki22

Well-Known Member
Joined
Jul 10, 2022
Messages
63
Location
Seguin, TX
Thinking out loud - I wonder if someone at the dealer had replaced an excavator pilot accumulator recently and instead of looking up the precharge pressure spec based on your JWF Serial Number simply assumed it would be the same pressure that the excavator accumulator used.?
I think your right!!!
 

Quki22

Well-Known Member
Joined
Jul 10, 2022
Messages
63
Location
Seguin, TX
Yea, I may just order the recharge valve and relieve the pressure myself. I don’t trust the dealer to do the right thing if I go back a 3rd time.
 
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